FR2489731A1 - Railway points or crossoVer frog tip mfr. - involves drop forging connecting piece and casting and forging or separating front tip piece - Google Patents
Railway points or crossoVer frog tip mfr. - involves drop forging connecting piece and casting and forging or separating front tip piece Download PDFInfo
- Publication number
- FR2489731A1 FR2489731A1 FR8117074A FR8117074A FR2489731A1 FR 2489731 A1 FR2489731 A1 FR 2489731A1 FR 8117074 A FR8117074 A FR 8117074A FR 8117074 A FR8117074 A FR 8117074A FR 2489731 A1 FR2489731 A1 FR 2489731A1
- Authority
- FR
- France
- Prior art keywords
- forging
- piece
- tip
- connecting piece
- front tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/20—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass railroad requirements, e.g. buffers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/10—Frogs
- E01B7/12—Fixed frogs made of one part or composite
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forging (AREA)
Abstract
Description
La présente invention est relative à un procédé de fabrication de pointes de coeurs d'aiguilles et de croisements dans lequel on soude bout à bout une pièce de raccordement obtenue par matriçage à la surface frontale arrière d'une partie de pointe avant présentant la pointe sur laquelle s'effectue la circulation. The present invention relates to a method for manufacturing points of hearts of needles and of crossings in which a connection piece obtained by stamping on the rear front surface of a front point part having the point on is welded end to end. which is carried out the circulation.
On connaît d'après le brevet allemand il 76 165 des coeurs d'aiguilles et de croisement comportant des pointes en forme de bloc, non assemblées en section, à l'extrémité arrière desquelles sont soudés bout à bout des rails de raccordement. La pointe en forme de bloc est alors constituée d'une partie de pointe avant présentant la pointe sur laquelle s'effectue la circulation et une pièce de raccordement soudée à la surface frontale arrière de la partie de pointe. Les deux parties de pointes reçoivent leur forme brute par une opération de matriçage selon un sens perpendiculaire au sens longitudinal des pièces matricées. La soudure bout bout se trouve sensiblement au milieu de la pointe de coeur. Known from the German patent il 76 165 of needle and crossing hearts comprising block-shaped points, not assembled in section, at the rear end of which are welded end to end connecting rails. The block-shaped point then consists of a front point part having the point on which the circulation takes place and a connecting piece welded to the rear front surface of the point part. The two parts of tips receive their raw form by a stamping operation in a direction perpendicular to the longitudinal direction of the stamped parts. The butt weld is located substantially in the middle of the core tip.
Ces coeurs d'aiguilles et de croisements ont un comportement satisfaisant mais présentent cependant l'inconvénient que les chambres pour les rails de raccordement à souder, se trouvant dans les pièces de raccordement, doivent être réalisées par un processus d'usinage mécanique particulier car elles ne peuvent être obtenues au cours du processus de matriçage du fait du sens de celui-ci. Ainsi ce type de fabrication est coûteux et long. Est également relativement coûteuse la fabrication de la partie de pointe avant sous la forme d'un élément matricé. These hearts of needles and crossings have a satisfactory behavior but nevertheless have the drawback that the chambers for the connection rails to be welded, being in the connection pieces, must be produced by a particular mechanical machining process because they cannot be obtained during the matrixing process because of its meaning. So this type of manufacturing is expensive and time consuming. It is also relatively expensive to manufacture the front tip part in the form of a stamped element.
L'invention se propose de fournir un procédé de fabrication de pointes de coeurs d'aiguilles et de croisements conduisant à une simplification importante de la technique de fabrication et ainsi à des économies importantes sans renoncer aux avantages des coeurs d'aiguilles et de croisements comportant des pointes en forme de bloc. The invention proposes to provide a method for manufacturing points of hearts of needles and crossings leading to a significant simplification of the manufacturing technique and thus to significant savings without giving up the advantages of hearts of needles and crossings comprising block-shaped spikes.
Ce but est atteint selon l'invention grâce au fait que la pièce de raccordement est obtenue par matriçage en sens longitudinal et que la partie de pointe avant est coulée sous la forme d'un élément en forme de coin, est obtenue par forgeage libre ou est découpée à partir d'une pièce forgée ou d'une brame laminée. This object is achieved according to the invention thanks to the fact that the connecting piece is obtained by forging in the longitudinal direction and that the front tip part is cast in the form of a wedge-shaped element, is obtained by free forging or is cut from a forged part or a rolled slab.
Selon un mode de mise en oeuvre préféré du procédé selon l'invention, la partie de pointe avant est découpée au chalumeau, par oxycoupage, à partir de la pièce forgée ou de la brame laminée. According to a preferred embodiment of the method according to the invention, the front tip part is cut with a torch, by flame cutting, from the forged part or from the rolled slab.
L'invention a également pour objet des pointes de coeurs d'aiguilles et de croisements dans lesquelles une pièce de raccordement obtenue par matriçage est soudée bout à bout à la surface frontale arrière d'une partie de pointe avant présentant la pointe sur laquelle s'effectue la circulation. The subject of the invention is also points of hearts of needles and of crossings in which a connecting piece obtained by stamping is welded end to end to the rear front surface of a part of front point having the point on which s performs the circulation.
Ces pointes de coeurs d'aiguilles et de croisements selon l'invention se caractérisent par le fait que la pièce de raccordement est obtenue par matriçage en sens longitudinal et que la partie de pointe avant est coulée sous la forme d'une pièce en forme de coin, est obtenue par forgeage libre ou est découpé a partir d'une pièce forgée ou d'une brame laminée. These points of hearts of needles and crosses according to the invention are characterized in that the connecting piece is obtained by stamping in the longitudinal direction and that the front tip part is cast in the form of a piece in the shape of wedge, is obtained by free forging or is cut from a forged part or a rolled slab.
L'invention présente l'avantage que l'on peut supprimer totalement l'usinage final, par enlèvement, de la pièce de raccordement pour les rails à souder, car le matriçage des pièces de raccordement en sens longitudinal permet de réaliser les chambres intermédiaires nécessaires à une soudure bout à bout parfaite avec les rails de raccordement, déjà sous forme définitive au cours du processus de matriçage. Cela procure d'une part une économie considérable en ce qui concerne les coûts de fabrication et d'autre part permet une économie substantielle de matière car l'extrémité de la pièce de raccordement est déjà usinée au cours du matriçage pour le processus de soudure bout à bout, ce qui est valable aussi bien pour le profilage des rails de raccordement que pour les chambres intermédiaires.Un autre avantage important réside dans le fait qu'également les avant-pointes peuvent être fabriquées de façon sensiblement plus économique de telle sorte que l'invention doit être appréciée comme étant très importante aussi bien selon le point de vue de l'économie de temps et de matière que sur le plan de la technique de fabrication. Grâce à l'invention, il est seulement nécessaire de maintenir en stock une pièce de raccordement pour les profils de rails S 41, S 49 et S 54 et respectivement pour le profil UIC-60, ce qui simplifie également de façon notable le stockage. I1 en résulte que par exemple, pour les rails
S 41, S 49 et S 54 la même chambre est prévue, de telle sorte que l'usinage par enlèvement de copeaux est uniquement nécessaire pour la réalisation de la dimension en hauteur.L'avant-pointe peut être réalisée de façon particulièrement avantageuse par découpage au chalumeau à partir d'une brame laminée ce qui présente en outre l'avantage que l'avant-pointe également peut être fabriquée en grande longueur de telle sorte que dans tous les cas, grâce à l'invention; on peut totalement supprimer les pointes de coeurs d'aiguilles et de croisements constituées de trois parties de pointe, et donc avec deux soudures bout à bout, qui sont encore utilisées dans des cas particuliers dans l'état de la technique.The invention has the advantage that the final machining, by removal, of the connection piece for the rails to be welded can be completely eliminated, since the die-cutting of the connection pieces in the longitudinal direction makes it possible to produce the necessary intermediate chambers. to a perfect butt weld with the connecting rails, already in final form during the die forging process. This provides on the one hand a considerable saving in terms of manufacturing costs and on the other hand allows a substantial saving of material because the end of the connecting piece is already machined during the die-stamping process for the butt welding process. At the end, which is valid both for the profiling of the connecting rails and for the intermediate chambers. Another important advantage lies in the fact that also the front centers can be produced in a substantially more economical way so that the The invention should be appreciated as being very important both from the point of view of saving time and material and from the point of view of manufacturing technique. Thanks to the invention, it is only necessary to maintain in stock a connecting piece for the rail profiles S 41, S 49 and S 54 and respectively for the UIC-60 profile, which also significantly simplifies storage. I1 follows that for example, for the rails
S 41, S 49 and S 54 the same chamber is provided, so that machining by chip removal is only necessary for the realization of the height dimension. The pre-tip can be carried out in a particularly advantageous manner by cutting with a torch from a laminated slab, which also has the advantage that the forefront also can be manufactured in great length so that in any case, thanks to the invention; it is possible to completely eliminate the points of hearts of needles and of crossings made up of three parts of point, and therefore with two butt welds, which are still used in particular cases in the state of the art.
L'invention va maintenant être décrite plus en détail en se référant à un exemple de -réalisation. La pointe de coeur d'aiguille et de croisement se compose d'une avant-pointe 1 et d'une pièce de raccordement 2 qui sont reliées à l'autre par soudure bout à bout 3. A la pièce de raccordement 2 se raccordent des rails de raccordement 5 et 6 qui sont soudés à la pièce de raccordement par des soudures bout à bout 4. On a désigné par 7 et 8 les rails pattes de lièvre qui sont reliés à la pointe de coeur par des fourrures et des vis non référencées. Les fourrures sont ultérieurement soudées latéralement à la partie de pointe de coeur. La pièce de raccordement peut avoir dans le sens de matri çage une hauteur d'environ 300 mm sans que le processus de matri çage n'en soit influencé de manière défavorable. Ainsi on utilise simultanément de façon optimale la hauteur de matriçage'maximale. The invention will now be described in more detail with reference to an exemplary embodiment. The tip of the needle and crossing point is made up of a point 1 and a connecting piece 2 which are connected to each other by butt welding 3. To the connecting piece 2 are connected connection rails 5 and 6 which are welded to the connection piece by butt welds 4. The hare legs rails which are connected to the heart point by furs and screws not referenced are designated by 7 and 8 . The furs are laterally welded laterally to the tip of the heart. The connecting piece can have a height of approximately 300 mm in the direction of forging without adversely affecting the forging process. Thus, the maximum matrixing height is used optimally simultaneously.
L'avant pointe est alors découpée de façon correspondante. The front point is then cut correspondingly.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803034184 DE3034184C2 (en) | 1980-09-11 | 1980-09-11 | Process for the production of frog points for frogs of switches and crossings |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2489731A1 true FR2489731A1 (en) | 1982-03-12 |
FR2489731B3 FR2489731B3 (en) | 1983-06-17 |
Family
ID=6111658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8117074A Granted FR2489731A1 (en) | 1980-09-11 | 1981-09-09 | Railway points or crossoVer frog tip mfr. - involves drop forging connecting piece and casting and forging or separating front tip piece |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT374385B (en) |
DE (1) | DE3034184C2 (en) |
FR (1) | FR2489731A1 (en) |
YU (1) | YU176081A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009135560A1 (en) * | 2008-05-09 | 2009-11-12 | Db Netz Ag | Method for manufacturing a cross frog with a tapered block and two connecting rail sections adjacent to the tapered block and joined to a center block, and cross frog |
CN109112907A (en) * | 2018-09-04 | 2019-01-01 | 中铁宝桥集团有限公司 | A kind of wing rail toe-end structure and its forming method |
CN109403162A (en) * | 2018-12-24 | 2019-03-01 | 中铁宝桥集团有限公司 | A kind of assembled frog fork core structure |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU87503A1 (en) * | 1989-04-21 | 1989-09-12 | Kihn Sarl | METHOD FOR MANUFACTURING NEEDLES FOR THROAT RAILS AND ONE-PIECE NEEDLE CARRIED OUT BY THIS PROCESS |
CN110761129B (en) * | 2019-10-31 | 2020-09-29 | 燕山大学 | Forging and casting integrated frog production method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1176165B (en) * | 1963-02-27 | 1964-08-20 | Kloeckner Werke Ag | Heart piece with a block-like heart piece tip |
AT345877B (en) * | 1976-12-03 | 1978-10-10 | Voest Ag | RAIL FEMALE PIECE OR CROSSING PART AND METHOD OF MANUFACTURING THE SAME |
-
1980
- 1980-09-11 DE DE19803034184 patent/DE3034184C2/en not_active Expired
-
1981
- 1981-07-09 AT AT303381A patent/AT374385B/en not_active IP Right Cessation
- 1981-07-16 YU YU176081A patent/YU176081A/en unknown
- 1981-09-09 FR FR8117074A patent/FR2489731A1/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009135560A1 (en) * | 2008-05-09 | 2009-11-12 | Db Netz Ag | Method for manufacturing a cross frog with a tapered block and two connecting rail sections adjacent to the tapered block and joined to a center block, and cross frog |
CN109112907A (en) * | 2018-09-04 | 2019-01-01 | 中铁宝桥集团有限公司 | A kind of wing rail toe-end structure and its forming method |
CN109112907B (en) * | 2018-09-04 | 2023-08-25 | 中铁宝桥集团有限公司 | Wing rail toe end structure and forming method thereof |
CN109403162A (en) * | 2018-12-24 | 2019-03-01 | 中铁宝桥集团有限公司 | A kind of assembled frog fork core structure |
Also Published As
Publication number | Publication date |
---|---|
AT374385B (en) | 1984-04-10 |
DE3034184C2 (en) | 1983-11-24 |
FR2489731B3 (en) | 1983-06-17 |
DE3034184A1 (en) | 1982-03-25 |
YU176081A (en) | 1984-04-30 |
ATA303381A (en) | 1983-09-15 |
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Legal Events
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TP | Transmission of property |